Biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model

Abstract With modern-day technical advances, high sagittal oblique osteotomy (HSOO) of the mandible was recently described as an alternative to bilateral sagittal split osteotomy for the correction of mandibular skeletal deformities. However, neither in vitro nor numerical biomechanical assessments...

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Autores principales:	Charles Savoldelli, Elodie Ehrmann, Yannick Tillier
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e9789d1a8f1542a0aed4cd019964eb64
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spelling	oai:doaj.org-article:e9789d1a8f1542a0aed4cd019964eb642021-12-02T16:45:21ZBiomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model10.1038/s41598-021-88332-22045-2322https://doaj.org/article/e9789d1a8f1542a0aed4cd019964eb642021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88332-2https://doaj.org/toc/2045-2322Abstract With modern-day technical advances, high sagittal oblique osteotomy (HSOO) of the mandible was recently described as an alternative to bilateral sagittal split osteotomy for the correction of mandibular skeletal deformities. However, neither in vitro nor numerical biomechanical assessments have evaluated the performance of fixation methods in HSOO. The aim of this study was to compare the biomechanical characteristics and stress distribution in bone and osteosynthesis fixations when using different designs and placing configurations, in order to determine a favourable plating method. We established two finite element models of HSOO with advancement (T1) and set-back (T2) movements of the mandible. Six different configurations of fixation of the ramus, progressively loaded by a constant force, were assessed for each model. The von Mises stress distribution in fixations and in bone, and bony segment displacement, were analysed. The lowest mechanical stresses and minimal gradient of displacement between the proximal and distal bony segments were detected in the combined one-third anterior- and posterior-positioned double mini-plate T1 and T2 models. This suggests that the appropriate method to correct mandibular deformities in HSOO surgery is with use of double mini-plates positioned in the anterior one-third and posterior one-third between the bony segments of the ramus.Charles SavoldelliElodie EhrmannYannick TillierNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Charles Savoldelli Elodie Ehrmann Yannick Tillier Biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model
description	Abstract With modern-day technical advances, high sagittal oblique osteotomy (HSOO) of the mandible was recently described as an alternative to bilateral sagittal split osteotomy for the correction of mandibular skeletal deformities. However, neither in vitro nor numerical biomechanical assessments have evaluated the performance of fixation methods in HSOO. The aim of this study was to compare the biomechanical characteristics and stress distribution in bone and osteosynthesis fixations when using different designs and placing configurations, in order to determine a favourable plating method. We established two finite element models of HSOO with advancement (T1) and set-back (T2) movements of the mandible. Six different configurations of fixation of the ramus, progressively loaded by a constant force, were assessed for each model. The von Mises stress distribution in fixations and in bone, and bony segment displacement, were analysed. The lowest mechanical stresses and minimal gradient of displacement between the proximal and distal bony segments were detected in the combined one-third anterior- and posterior-positioned double mini-plate T1 and T2 models. This suggests that the appropriate method to correct mandibular deformities in HSOO surgery is with use of double mini-plates positioned in the anterior one-third and posterior one-third between the bony segments of the ramus.
format	article
author	Charles Savoldelli Elodie Ehrmann Yannick Tillier
author_facet	Charles Savoldelli Elodie Ehrmann Yannick Tillier
author_sort	Charles Savoldelli
title	Biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model
title_short	Biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model
title_full	Biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model
title_fullStr	Biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model
title_full_unstemmed	Biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model
title_sort	biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e9789d1a8f1542a0aed4cd019964eb64
work_keys_str_mv	AT charlessavoldelli biomechanicalassessmentofdifferentfixationmethodsinmandibularhighsagittalobliqueosteotomyusingathreedimensionalfiniteelementanalysismodel AT elodieehrmann biomechanicalassessmentofdifferentfixationmethodsinmandibularhighsagittalobliqueosteotomyusingathreedimensionalfiniteelementanalysismodel AT yannicktillier biomechanicalassessmentofdifferentfixationmethodsinmandibularhighsagittalobliqueosteotomyusingathreedimensionalfiniteelementanalysismodel
_version_	1718383489237123072

Biomechanical assessment of different fixation methods in mandibular high sagittal oblique osteotomy using a three-dimensional finite element analysis model

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